Windmill.



A. M. VOLI). WINDMILI" PPLIOATION FILED 111113.14, 1910.

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A. M. VULD.

` WINDMILL. APPLIoATIo'N PILE-D PEB. 14, 1910.

Patented June 14, 1910.

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A. M. VOLD. YWINDMILL. APPLICATIONTILED FEB'. 14, 1910.

Patented June 14, 1910.

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ALFRED IVI. VOLI), OF CHICAGO, ILLINOIS.

WINDMILL.

Specicaton of Letters Patent.

Application filed February 14, 1910.

Patented June 14:, 1910.

Serial No. 543,837.

To all whom i may concern:

Be it known that I, ALFRED M. VoLD, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Windmills, of which thefollowing is a specification.

My invention relates to improvements in wind mills and has for itsobject the production of a wind mill of simple construction andeflicient in its operation.

The invention consists in the combination and arrangement of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

Figure 1 is a side elevation of a wind mill embodying my invention, Fig.2 is a top plan View of the same, and Fig. 3 is a section on line :2cofFig. 2.

The preferred form of construction as illustrated in the drawingscomprises a rigid main rotatable power frame consisting of upper andlower members 1 connected together at the corners by means of verticalrods or struts 2. Shafts 3 are rotatably mounted in frame 1 and carrywind mill blades 1` fixed thereto. Each of the shafts 3 carries at itslower end a crank arm 5, one of said crank arms being fixed to itscorresponding shaft by screw threads 5 and the other crank arms beingloose or free to rotate thereon. A supplemental oscillatory frame 6 ispivotally secured to the free ends of crank arms 5 being also supportedby outer and similar crank arms 7 loosely mounted on struts 2. The frame6 is also pivotally connected to the ends of crank arms 8 which are xedto a series of shafts 9 rotatably mounted in frame 1. Each of theseshafts 9 carries a spur gear 10 meshing with a spur gear 11 Xed to ashaft 12 rotatably mounted in frame 1. Each of the shafts 12 alsocarries a sprocket wheel 13 over which passes a sprocket chain 1Acarrying outwardly roj ecting stops or lugs 15. Frame 1 is carried by acentral shaft 16 supported and carried by a drum 17 rotatably mountedupon ball bearings 18 in a suitable frame or tower 19. Drum 17 carries asprocket wheel 20 from which power may be taken. A cord or cable isextended upwardly through drum 17 and connected at its upper end withframe 6 and by means of which said frame may be tied or anchored againstoscillation.

In operation with the wind blowing in the direction indicated in Fig. 2the natural tendency of blades 4l is to assume a position parallel withsaid wind. Thus the blade carrying the fixed crank arm 5 tends tomaintain its position parallel with the wind so that as frame 1 rotatesa rotating motion relatively to frame 1 will be imparted to supplementalframe 6. This rotation will be communicated to shafts 9 through crankarms 8 thus causing sprocket chain 14 to travel in the directionindicated by the arrows in Fig. 2. The arrangement is such that theloose blades will be engaged by stops 15 on chain 14: and held in thepositions indicated at the right of Fig. 2 in which positions the forceof the wind is exerted thereon to cause rotation of frame l, and saidblades on the left of Fig. 2 are released from chain 14 to permit themto assume a position parallel to the direction of the wind and thusoffer little resistance to the rotation of the frame on that side. Thisengaging and releasing action of the blades takes place in the'samemanner as the teeth of intermeshing cog wheels engage and release, thenotches in the sides of the blades facilitating such action. Thus itwill be seen that the frame 1 will be caused to rotate continuously andin a constant direction by the action of the wind on the blades held bysaid chain. This rotation is communicated to drum 17 and power may betaken, therefrom by means of sprocket 20. To stop the rotation of thewind mill cable 21 is tied or otherwise anchored to hold frame 6 againstoscillations and thus to prevent travel of chain 14. This will stop therotation of the wind wheel.

Vhile I have illustrated and described the preferred construction forcarrying my invention into effect this is capable of` variation ormodication without departing from the spirit of my invention. Itherefore do not wish to be limited to the exact details of constructionset forth but desire to avail myself of such variations andmodifications as come within the scope of the appended claims.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. In a wind mill the combination of a rotatable power frame; a seriesof blades mounted to rotate in said frame onvertical axes; a crank armfixed to one of said blades; a sprocket chain carrying stops adapted toContact with the inner sides of said blades and control their positions;and an operative connection between said crank arm and said sprocketchain, substantially as described.

2. In a wind mill the combination of aYV and said sprocket chains,substantially as described.

3. In a wind mill the combination of a rotatable power frame; a seriesof blades mounted to rotate in said frame on vertical 4 axes; a crankarm fixed to one of said blades;

a supplemental frame pivotally connected with said crank arm; a seriesof supplemental crank arms rotatably mounted on said power frame andpivotally supporting said supplemental frame; a sprocket chain carryingstops adapted to contact with the inner sides of said blades and controltheir positions; a set of Vertical shafts in said power frame carryingsprocket wheels for operating said chain; a set of operative verticalshafts geared to said first mentioned vertical shafts; and crank armsfixed to said operative vertical shafts and pivotally connected withsaid supplemental frame, substantially as described.

4. In a wind mill the combination of a rotatable power frame; a seriesof blades mounted to rotate in said frame on vertical axes; a crank armfixed to one of said blades; a supplemental frame pivotally conpowerdrum carrying said power frame and mounted upon ball bearings; and meansfor taking power from said drum, substantially as described.

5. In a wind mill the combination of a rotatable power frame; a seriesof blades mounted to rotate in said frame on vertical axes; a crank armfixed to one of said blades; a supplemental frame pivotally connectedwith said crank arm; a series of supplemental crank arms rotatablymounted on said power frame and pivotally supporting said supplementalframe; a sprocket chain carrying stops adapted to contact with the innersides of said blades and control their positions; a set of verticalshafts in said power frame carrying sprocket wheels for operating saidchain; a set of operative vertical shafts geared to said first mentionedvertical shafts; crank arms fixed to said vertical `shafts and pivotallyconnected with said supplemental frame; a cable for anchoring saidsupplemental frame against movement; a power drum carrying said powerframe and mounted upon ball bearings; and means for taking power fromsaid drum, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALFRED M. VOLD.

Vit-nesses HELEN F. LILLrs, JOSHUA R. H. Porre.

